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Toxicity to terrestrial arthropods

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Since C.I. Pigment Yellow 34 and C.I.Pigment Red 104 are highly insoluble, exposure of terrestrial organisms to the substance is not expected. Therefore, no data exist on the toxicity of the substance to terrestrial arthropods. However, a minor part of C.I. Pigment Red 104 may dissolve and release lead and chromate ions. The toxicity of chromium to the fig moth was investigated in a feeding test. Trivalent and hexavalent chromium had little effect on fecundity and survival of fig moths. However, for hexavalent chromium lethal mutations were detected at concentrations of 150 and 200 mg Cr/ kg food (Al-Hakkak and Hussain 1990). The toxicity of lead was tested in a study on the survival and reproduction of Collembola. The animals were exposed to lead via soil at different pH. After 4 weeks of exposure an EC50 (reproduction) of 2970µg lead/g soil of pH 6 was detected (Sandifer and Hopkin 1996).